Blog Archives

New book and package pmfdR

March 26, 2017
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Processing and modelling financial data with R - My Portuguese book about finance and R was published a couple of months ago and, given its positive feedback, I decided to work on the english version immediately. You can find det...

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Can we predict stock prices with Prophet?

March 5, 2017
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Can we predict stock prices with Prophet?

- Facebook recently released a API package allowing access to its forecasting model called prophet. According to the underling post: It's not your traditional ARIMA-style time series model. It's closer in spirit to a Bayesian-...

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Writing a R book and self-publishing it in Amazon

February 16, 2017
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Writing a R book and self-publishing it in Amazon

My experience and some advices about the process - Many people, including my university colleagues and friends, have asked me about the process of writing a book and self publishing it in Amazon. You can find the details about the...

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Using R to study tennis players

February 13, 2017
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Using R to study tennis players

Looking at winning records of ATP top players and Brazilian tennists - In the previous post about tennis, we studied how changes in ball’s composition in hard and grass courts affected the game back in 2000. In this post,...

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Shiny+Exams

February 10, 2017
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Serving book exercises in the web with Shiny and Exams - As you may know, I recently published a R book in amazon. I decided to keep R exercises out of the book and serve them freely over the web....

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My Book is out!

February 6, 2017
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My Book is out!

I am happy to announce that my book about R and Finance (in portuguese) is finally available! The idea of writing a book about R started back in the end of 2015, when I decided to try something different than...

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Using R to study the evolution of Tennis

February 5, 2017
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Using R to study the evolution of Tennis

An analysis of point by point data - I’m a big fan of Tennis. When I’m not working in the university, you can probably find me in my favourite tennis club, Sogipa. What is so great about Tennis? It is a sport...

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Building and maintaining exams with dynamic content

January 30, 2017
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Building and maintaining exams with dynamic content

An introduction to package exams - Part of my job as a researcher and teacher is to periodically apply and grade exams in my classroom. Being constantly in the shoes of an examiner, you soon quickly realize that students are cleve...

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Using R to download high frequency trade data directly from Bovespa

January 18, 2017
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Using R to download high frequency trade data directly from Bovespa

Using package GetHFData - Recently, Bovespa, the Brazilian financial exchange company, allowed external access to its ftp site. In this address one can find several information regarding the Brazilian financial system, including d...

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Searching for predatory journals and publishers with R

January 17, 2017
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Searching for predatory journals and publishers with R

Using package predatory - The recent rise of publications in predatory journals is a big issue in the academic community and it hurts the development of science. This is especially true for developing countries such as Brazil, whe...

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